Improvement in treadles for machinery



'UNITED STATES PATENT OEEICE.

JASPER IIAMET SINGER, OF NEW YORK, N. Y.

IMPROVEMENT IN TREADLES FOR MACHINERY.

Specification forming part of Letters Patent No. 94,518, dated September 1869.

To all whom it may concern:

Be it known that I, JASPER HAMET SINGER, of the city, county, and State of New York, have made an invention of a new and useful Improvement in the Treadle-Motions of Sewing-Machines, which is also applicable to the treadle-motions of other small machines; and that the following is a full, clear, and exact description and specification of my said invention.

Treadle-motions ofsewin g-m achines, as heretofore constructed, consist of a table or stand to support the machine, of a y-wheel shaft and beltpulley or fly-wheel to impart motion to the machine, of a reciprocating treadle mounted upon a treadle-shaft, and of a crank and pitman, by means of which the reciproeatin g movements of the treadle are caused to impart continuous rotary motion to the iiywheel shaft.

The object of my invention is to simplify the mechanism of such implements; and it consists of the combination of the stand or table for supporting the machine with a rotary cranked treadle-shat't, and with a beltpulley, or its equivalent or substitute, for transmitting motion, so that the reciprocating treadle and pitman are entirely dispensed with, and a direct rotary motion is imparted to the belt-pulley, which, if desired, may also be made sufficiently heavy to act as a iiywheel.

In order that my invention may be fully understood, I will proceed to describe the treadlelnotion of a sewing-machine constructed according to it- Figure l of the accompanying drawings representing a front view of the treadlemotion, and Fig. 2 representing a vertical. transverse section of the same.

The stand or table A of the treadle-motion may be of any 011e of the constructions now in common use. It must, however, be provided with suitable bearings for the treadle-shaft B, which is constructed to revolve 1n said bearings. This trcadle-shaft is double-cranked, as

seen at (l d, and each crank is, by preference, tted with a treadle, c, within which the crankwrist of the crank can freely revolve but such treadles are not essential to the invention.

When treadles are used their vfaces should be ronghened to afford a secure hold for the sole of the shoe of the operator.

The treadle-shaft is fitted with a belt-pul ley, F, to which the belt is applied, by which the rotary movement of the treadle-shaft is transmitted to the sewing or other machine mounted upon the stand, and I prefer to make this belt-pulley suiliciently heavy to act as a flywheel.

The operator sits facing the stand or table, and applies his feet to the two cranks of the treadle-shaft, which are caused to revolve by the pressure exerted. The system gives the operator complete command of the machine driven, because themovement of the feet can be stopped, reversed, or started at any desired part of the revolution of the belt-pnlley, without the necessity of applying the hand to it.

If deemed expedient, a flywheel separate from the belt-pulley may be secured to the rotary treadle-shaft. The treadles also-may be omitted, in which case the feet of the operator are applied to the crank-wrists. A cog-wheel may be used in place of a beltpulley to trans mit the motion to the machine; or, two cranks, at right angles with each other, and two pitmen, may be used for the same purpose as a substitute for the belt-pulley and belt.

I claim as my invention, and desire to secure by Letters Patent- The combination of the stand, rotating cranked treadleshaft, and belt-pulley, the whole constructed to operate substantially as before set forth.

In testimony whereof I have hereto set my hand this 12th day of July, A. D. 1869.

JASPER H. SINGER.

Titnesses z IsAAc A. SINGER, HENRY E. KLUGH. 

